First round of updates for the Project Nami HTTP object cache implementation.
Merge branch 'master' of http://github.com/ProjectNami/projectnami
Create new WP_Object_Cache object and assign it to the global .
Temporarily ignore the http-object-cache implemntation until object instancing issues can be worked through.
Revert "Temporarily ignore the http-object-cache implemntation until object instancing issues can be worked through."

This reverts commit 9daa7fad672f219f7f5cab5e1ca4953ef072b6aa.
Only load the HTTP object cache if PN_USE_HTTP_CACHE is defined.
Add quotes around constant.
Added support for remote post call with WP_Object_Cache.
Removed commented out debug code.
Merged with WordPress trunk r24431-r24433.
Added version number.
Require not only PN_USE_HTTP_CACHE to be defined, but also for the constant to be set to true.
Merged with WordPress trunk r24433 rr24456.
Merged with WordPress trunk r24457-r24491.
Merged with WordPress trunk r24492-r24497.
Merged with WordPress trunk r24498-r24501.
Formatting change. Added newline before return.
Merged with WordPress trunk r24502-r24507.
Removed commented out debug code.
Merged with WordPress trunk r24508.